/**
* Returns a clone of the dataset.
*
* @return A clone.
* @throws CloneNotSupportedException if there is a problem cloning the dataset.
*/
@Override
public Object clone() throws CloneNotSupportedException {
TestIntervalCategoryDataset clone = (TestIntervalCategoryDataset) super.clone();
clone.data = (KeyedObjects2D) this.data.clone();
return clone;
}
